Key monitor
The warning signal sounds if the driver's door is open and if the ignition key is in the LOCK or OFF position. Voltage +B from the ignition switch is connected to pin 7 on the control module. Accordingly, DICE detects +B when the car key is in the ignition switch.
If the driver's door is opened, DICE gets a message via the bus from TWICE (OPEN/CLOSED). DICE sends information on the bus to SID (Audible signal) which generates a PING sound.
Maximum length of time for the acoustic signal is 10 minutes.